10005556 has 12 divisors (see below), whose sum is σ = 19101600. Its totient is φ = 4547960.

The previous prime is 10005539. The next prime is 10005559. The reversal of 10005556 is 65550001.

It is a super-2 number, since 2×10005556² = 200222301738272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10005559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113656 + ... + 113743.

It is an arithmetic number, because the mean of its divisors is an integer number (1591800).

Almost surely, 2^10005556 is an apocalyptic number.

It is an amenable number.

10005556 is a deficient number, since it is larger than the sum of its proper divisors (9096044).

10005556 is a wasteful number, since it uses less digits than its factorization.

10005556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227414 (or 227412 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 10005556 is about 3163.1560189153. The cubic root of 10005556 is about 215.4833617464.

Adding to 10005556 its reverse (65550001), we get a palindrome (75555557).

It can be divided in two parts, 10005 and 556, that multiplied together give a triangular number (5562780 = T₃₃₃₅).

The spelling of 10005556 in words is "ten million, five thousand, five hundred fifty-six".